PROBLEM TO BE SOLVED: To provide a balance ability measuring apparatus with a new structure which can easily and accurately evaluate balance abilities of subjects with different physiques.SOLUTION: A balance ability measuring apparatus 10 comprises: a load sensor 20 for detecting a load acted on a measuring surface; a center-of-gravity detection device 40 for detecting a position of the center-of-gravity of a subject by detection signals of the load sensor 20; a pressure distribution sensor 20 comprising a plurality of pressure detection parts 38 disposed on the measuring surface; a foot pressure area detection device 40 for detecting a foot pressure action area of the subject by detection signals of the pressure distribution sensor 20; a reference width dimension setting device 40 for setting a reference width dimension of the foot pressure action area in a center-of-gravity displacement direction on the basis of detection signals of the foot pressure action area; a center-of-gravity displacement magnitude calculation device 40 for calculating a displacement magnitude of the center-of-gravity position of the subject based on a width direction dimension ratio to the reference width dimension of the foot pressure action area; and a display device 14 for externally displaying a measurement result based on the displacement magnitude of the center-of-gravity position calculated by the center-of-gravity displacement magnitude calculation device 40.SELECTED DRAWING: Figure 6【課題】体格の異なる被検者がバランス能力を簡単にかつ正しく評価することができる、新規な構造のバランス能力測定装置を提供すること。【解決手段】バランス能力測定装置10であって、測定面に作用する荷重を検出する荷重センサ20と、荷重センサ20の検出信号によって被検者の重心位置を検出する重心検出装置40と、測定面に配された複数の圧力検出部38を備える圧力分布センサ20と、圧力分布センサ20の検出信号によって被検者の足圧作用領域を検出する足圧領域検出装置40と、重心変位方向における足圧作用領域の基準幅寸法を足圧作用領域の検出信号に基づいて設定する基準幅寸法設定装置40と、足圧作用領域の基準幅寸法に対する幅方向寸法割合をもって被検者の重心位置の変位量を求める重心変位量演算装置40と、重心変位量演算装置40で求められた重心位置の変位量に基づいた測定結果を外部表示する表示装置14とを、有する。【選択図】図6